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The state of nature has a law of nature to govern it, which obliges every one: and reason, which is that law, teaches all mankind, who will but consult it, that being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.

People are always blaming their circumstances for what they are. I don't believe in circumstances. The people who get on in this world are the people who get up and look for the circumstances they want, and, if they can't find them, make them.

數學家是能在定理間找到類比的人；更好的數學家能在理論間看到類比；而最優秀的數學家能注意到類比之間的類比。

最好的經濟解決方案往往是反直覺的。

I'm only rich because I know when I'm wrong... I basically have survived by recognizing my mistakes.

"The most important thing is to keep learning and adapting."